2120312331 has 12 divisors (see below), whose sum is σ = 3063671208. Its totient is φ = 1413081024.

The previous prime is 2120312309. The next prime is 2120312333. The reversal of 2120312331 is 1332130212.

2120312331 is a `hidden beast` number, since 2 + 1 + 20 + 312 + 331 = 666.

It is not a de Polignac number, because 2120312331 - 2¹⁹ = 2119788043 is a prime.

It is a super-2 number, since 2×2120312331² = 8991448761981307122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2120312333) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7950 + ... + 65603.

It is an arithmetic number, because the mean of its divisors is an integer number (255305934).

Almost surely, 2^2120312331 is an apocalyptic number.

2120312331 is a deficient number, since it is larger than the sum of its proper divisors (943358877).

2120312331 is a wasteful number, since it uses less digits than its factorization.

2120312331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76762 (or 76759 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 2120312331 is about 46046.8493058971. The cubic root of 2120312331 is about 1284.6947411383.

Adding to 2120312331 its reverse (1332130212), we get a palindrome (3452442543).

The spelling of 2120312331 in words is "two billion, one hundred twenty million, three hundred twelve thousand, three hundred thirty-one".